Siphon breaking and concentrated water discharging device for reverse osmosis membrane host

Abstract

The invention discloses a siphon breaking and concentrated water discharging device for a reverse osmosis membrane host. The siphon breaking and concentrated water discharging device comprises a concentrated water side downgoing stand pipe, a CIP cleaning and communicating pipeline, a concentrated water side upgoing stand pipe, a siphon breaker, a concentrated water discharge pipe and a concentrated water discharge port, wherein the upper part of the concentrated water side downgoing stand pipe and a concentrated water side of the reverse osmosis membrane host are communicated, the concentrated water side downgoing stand pipe, the concentrated water side upgoing stand pipe and the concentrated water discharge pipe vertically extend to a pipe gallery layer from a reverse osmosis membrane host layer from top to bottom, the tops of the concentrated water side upgoing stand pipe and the concentrated water discharge pipe are both higher than the position of the top part of a rack of the reverse osmosis membrane host, the concentrated water discharge port is arranged at the bottom of the concentrated water discharge pipe, and the concentrated water discharge port is communicated with a concentrated water collecting device. The siphon breaking and concentrated water discharging device for the reverse osmosis membrane host is simple in structure, integrates the functions of discharging flushing water and concentrated water and breaking siphon, reduces the risk of polluting a membrane shell, avoids the siphon caused by the discharge of the concentrated water, and brings convenience in dismantling and cleaning a concentrated water discharge pipeline.

Description

technical field [0001] The invention relates to a concentrated water discharge device, in particular to a reverse osmosis membrane host broken siphon concentrated water discharge device. Background technique [0002] During the operation of the reverse osmosis process, while producing purified water, the pollutants / salts are concentrated on the concentrated water side, which exceeds the natural solubility in water, causing the concentrated water to easily scale. After the reverse osmosis equipment has been in operation for a period of time, the hardness of the concentrated water side is 4 to 5 times the concentration of various pollutants in the raw water. Due to the concentration polarization, various types of dirt may be generated on the surface of the reverse osmosis membrane, resulting in The performance of the reverse osmosis membrane decreases, the water production rate decreases, and the desalination rate decreases. When the reverse osmosis system is shut down due to...

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Problems solved by technology

At the same time, for the high recovery rate reverse osmosis system, crystals are easy to form in the concentrated water discharge pipe, resulting in a smaller cross-section of the concentrated water discharge pipe and a decrease in the flow rate of the concentrated water, which further leads to an increase in the recovery rate and increases the risk of fouling of the reverse osmosis membrane.

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